Electric-arc lamp.



No. 693,705'. Y Patented ren. la, |902.

g -J. A. HEANY. v.

ELGTRICA-HC LAMP. @Application mea .my 12, 190;.)

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ELECTRIC- ARC LAMP. v

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v Nm. 693,705.v L'Patented Feb.' I8, |9112..

- J. A; HEANY. ELECTBlCR LAMP.

v (Appicatzm filed July '12, 1901.) (N0 Model.) Y 4.Sheets-Sheet' 3.

No. 693,705. PanenmlI Feb. 18,1902'.

- d. A. HEANY.

ELECTRIC ARC LAMP. (Appumion'glea wir 12, 1901;)

4vSheeis-Sheet `4..

UNITED STATES- JOIIN A. HEANY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PATENT OFFICE.

TETER-HEANY DEVELOPING COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, AND CHARLESTON, WEST VIRGINIA, A CORPORATION OF WEST ELECTRIC-ARC LAMP.

lS'Il?IECIFICALTION forming part of Letters Patent No. 693,705, dated February 18, 1902.

Y Application led July l2, 1901.

' The principal objects of my invention are,

first, to provide in an 'arc-lamp a substantially airtight receptacle wherein the carbons are adapted to be consumed and a skeleton framework of improved constructionadapted to support the solenoid-coil and its core in a position remote from the heat-emitting portions of said lamp; second, to provide in an arc-lamp a tubular guide for the uppercarbon which is held separate from thel lamp and resistance and from the solenoid-coil by the skeleton frame to prevent any transmission of heat from the arc of the lamp and coil to said guide and from the same to the solenoid coil and core; third, to provide in an arc-lamp a clutch mechanism for the upper carbon comprising a plate normally resting on the lamp proper and encircling the upper carbon, a rod connecting said plate with the solenoid-core, arranged at the upper end of the lamp, anda spring-controlled sleeve 'arranged on said rod tending to bringthe plate into an oblique position at the beginning of the upward movement of the solenoid-core guide for the upper carbon and having slots arranged in an arc of a circle engaging rods or supports for the solenoid-coil and its core, and which bracing or stiffening plates by the loosening or tightening of nuts and a slight .turning thereof can be readily removed or secured to said rods, and, fifth, to provide anarc-lamp with a coil having depending slotted arms adapted to engage the upper serial no. 67,939. (No man.)

ends of rods or supports holding the same a distance above the heat-emitting parts of the lamp to prevent transmission of heat from the same to the coilv and removably secured thereto. v

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in Which- Figure lisa side elevational view of an arclamp embodying the main features of my invention. Fig. 2 is a central sectional View of the same. View of the upper portion of thelamp.. Figs. 4 and are respectively enlarged transverse sectional views on the line 4 4 of Fig. 1 lookin@ res ectivel1 in' directions toward the upper and lower ends of the lamp. Figs. (3-

and 7 are similar sectional views on the line 6 6 of Fig. l; and Fig. 8 is an enlarged detail view illustrating, partly in elevation and partly in section, the clutch mechanism of the lamp.

Referring to thedrawings, o. represents the upper, and b the lower, carbons. The abutting ends of these carbons are inclosed in a globe c, secured at'its open end to a disk or plate d, which in conjunction with the globe c forms the air-tight receptacle in which the carbons a and b are adapted to be consumed. The' disk d also supports a depending holder d for the lower or fixed carbon b, which holder is suitably insulated from said disk d'. The disk is furthermore provided with a centrallyarranged opening d2, through which the upper or movable carbon a passes and is adapt-` l gaged by arms f', f2, and f3, depending from Fig. 3 is an enlarged sectional the under side'of a solenoid-coil f. Each of the horizontally-bent ends of the arms f, f2, and f3 are provided with a slotfs, and all of the slots f8 are arranged in an arc of a circle. This arrangement allows the engagement and disengagement of the arms f,f2, and f3 to and from the projecting` rods or posts e, e', and e2 by a slight turn of the coii f either to therightorleft. Thesearmsarealsoclamped to the said posts or rods by means of nuts f4 and f5, and by the loosening of these nuts the solenoid-coilfcan be readily removed from said rods or posts e, e', and e2, which is advantageous in the replacing or repairing of said coil and for the dismantling and ready assembling of the lamp. At some distance from the ends ot the rods e, e', and e2'are arranged two superposed stiffening or bracing plates g and g', each being provided with radiating arms g2, g3, and g4, having slots g5 in their respective ends. These slots g5 are also arranged within an are of a circle, so that the plates g and g10 may readily engage and be disengaged from the posts e, e', and e2 by a slight turn. Nuts Q6 and gT are employed to hold and clamp these plates securely, and yet they are readily removable from the posts e, e', and e2. Besides stftening and bracing the rods or posts e, e', and e2 the plates g and Q10 also serve to support a tube 7L in a position above the centrally-arranged opening cl2 of the disk d of the lamp proper, so that the upper end of the movable carbon a, passing through said opening, will be received and properly guided by said tube 7L. The upper end of the tube 7L is located in an opening g8 ot' the plate g, whereas the lower end of the tube rests on a plate fi, arranged below the plate g1@ for a purpose to be hereinafter more fully described. The rods or posts e, e', and e2, projecting from the disks d ot' the lamp proper, in conjunction with the plates g and gw, form a light skeleton framework especially adapted to allow a free circulation of air through the same, so as to cool the frame. Furthermore, the location of the solenoidcoilfabove the rods or posts e, e', and e2 in a position remote from the light and heat emitting parts of the lamp insures against any transmission of heat from the lamp to the solenoid-coil and in such manner as has not hitherto been attained. Likewise the arrangement of the tubular guide 71. for the upper carbon away and separate from the arc and the solenoid-coil f prevents possible transmission of heat from the are to the solenoidcoil by said tube for a purpose to be hereinafter more fully explained.

The guide-tube h for the movable carbon a is closed at its upper end by a disk h', to which is secured by a binding-screw h2 the end of a spirally-wound wire h3, the other end of which is connected to a projection k' of a cap 7c, into which the carbon ct tits. This cap 7c slides within the guide-tube 7i. and serves to conduct the current to the carbon ct, as well as to hold said carbon in a central position and also in alinement with the opening d2 of the disk d of the lamp proper. On the rods or posts e, e', and e2 and resting on the lower bracing-plate g1@ are arranged insulating-pieces l, preferably of porcelain, the grooves Z of which serve to support a coiled and spirally-arrauged resistance-wire m, as fully illustrated in Fig. l of the drawings. One end m/ of the resistance-wire m is connected with the holder d of the lower or fixed carbon b, while the other end 'm2 is connected with areturn-wire. (Not shown.) The electric current enters the lamp first by a wire flo, passing to the solenoid-coil f. From this coil it passes by a wiref11 and binding-screw f12 to the metal casingf9 of the coil j', thence through the arms f', f2, and f3 to the rods e, e and e2, thence to the upper bracing-plate g, disk 7L of the tubular guide h, bindingscrew h2, wire 71,3, cap 7c, to the upper and lower carbons et and b, and from the same into the holder cl for the lower carbon l), to the resistance through the same, to a return-wire m2, thus completing the circuit through the lamp.

The solenoid-coilf is wound on a tube f, the upperend of which is closed by a cap fm. This cap carries, properly insulated therefrom, a ring fw, by means of which the arclamp may be suspended. Within the tube fis tits the solenoid-core n in such a manner that the air during the upward movement of the core will slowly be displaced from the tube fm. Likewise in the downward movement of the core n the air will be slowly admitted to the tube j to prevent a quick movement of the core, the object of which will be presently more fully explained.

To the lower end ofthe solenoid-core n is secured adepending rod n, the end of which in the point n3 is pivotally connected to a plate n2, encircling the movable carbon aand normally resting on the disk d, as illustrated in Figs. l and 8 of the drawings. The free end of the plate n2, forming the gripping-plate for the carbon a, is forked and engages the rod e', as shown in Figs. 7 and 8 of the drawings. The rod n passes through anopening arranged in the plate t', located below the lower bracing-plate g10 for the guide-tube 7L, and is thus securely held in a vertical position, as will be readily understood from Figs. l, 2, 6, and 8 of the drawings.

On the rod n' and also passing through the opening t" of the plate t' is located a loose sleeve n4, the lower end a5 of which is bent sidewise and preferably formed into two arms nresting on the plate n2. Surrounding the rod n and resting on the upper end of the sleeve n" is a spring n?, which bears against a ringns, fixed to the rod n. The gripping-plate n2, rod n', sleeve n4, with its projecting arms n, sp1-ing 91,7, and ring 'ns form the clutch mechanism of the lamp, which is actuated by the solenoid-core n. Vhen the solenoid-core n is drawn upward in its tube fis by the influence of the solenoid-coil f in a well-understood manner, the gripping-plate n2, by means IOO IIO

ward movement of the core 'n' the gripping plate will first grip` the carbon a and then raise the same. The slow displacing of the air in the tube f13 by the solenoid-core n will prevent the quick or sudden upward movement of the movable carbon a in order to form the arc between the same and the fixed carbon b andwill in this manner overcome the flickering or dancing of the upper carbon ct. Furthermore, the prevention of any quick downward movement of thecarbon a by thel Y In order to utilize almost the entire carbon a, the gripping-plate n2 of the clutch mechanism is located in close proximity to the arc. The arc, however, is notfinfluenced by said plate, as all the parts of the clutch mechanism are made of non-magnetic material, such asbrass or the like.

In order to insure a proper Working of the solenoid-coil and its core continuously, the coil and its core in the lamp, as described, have been placed in a position remote from thek heat-emitting parts of the lamp, such as the arc and the resistance, which in the present instance are located in closeproximity to each other. The skeleton framework interposed between the lamp proper and the coil allows at all times a free circulation of air and also prevents any ktransmission of heat through the guide-tube hof the uppercarbon through the separating and locatingof the same some distance from the lamp proper and solenoidcoil and itscore. By this arrangement the greatest obstacles hitherto I encountered in arc-lighting-that is, the heating of the solenoid-core-is effectually overcome, which heating, as is well known, increased the resistance in said core proportional to the increase of heat. A solenoid-core so heated does not respond to the magnetic infiuence of the coil, so that there ywas hitherto no regularity as to control of the arc in such lamps. The solenoid-coil f is surrounded by an iron cover o, which is adapted to act asaconductor for the magnetic lines of force, and thus increases the efficiency of the solenoid-coil in action in the lamp.

Having thus described the nature and objects of my invention, what I claim as new, and desire to` secure by Letters Patent, is-

' l. In anv electric-arc lamp, a globe and a roof-plate forming a substantially air-tight receptacle wherein the carbons are adapted' to be consumed, a series vof posts or uprights projecting upward from and supporting said roof-plate, an upper and a lower plate con-` nected to and supported by said posts, a tube forming a guide for the upper carbon and extending between the upper and lower plates and within the posts,a solenoid-coil supported by the posts above said upper plate, and a resistance-coil supported by said postsintermediate Aof Vthe two plates, substantially asand for Vthe purposes described. f

2. In an electric-arc lamp, a solenoid-coil, a tube around which the coil is located, acore fitting `snugly in the tube, a rod depending from-said core, acluteh-plate perforated to permit of the passage of one of the carbons, said plate pivotally connected at one side to the lower end of said rod, a sleeve loosely supported `on said rod and having at its lower end prongs or projections engaging the clutchplate beyond its pivotal connection with the rod, a spring normally tending to depress the sleeve and a guide-post for the free side of said clutch-plate, substantially as and for the purposes described.

v 3. In an electric-arc lamp, a globe, a roofplate closing the upper end of said globe, a skeleton framework extending upward from said roof-plateand detachable therefrom, said framework comprisinga series of posts or uprights, plates detachably secured to said posts or uprights near respectively the upper and lower extremities thereof, a tube forming the guide for the upper carbon and connecting said plates, said tube lying within the posts or uprights, a solenoid-coil adapted to be detachablyl connected with the upper extremity -of eachof said posts, and a solenoid-core controlling the feeding of the carbons, said core adapted to traverse the solenoid-coil above the uppermost plate of the framework.

4. In an electric-arc lamp, a disk forming part, of anair-tight receptacle in which the carbons Vare adapted to be consumed, rodssecured to said disk and supporting at their upper extremities a solenoid-coil and a solenoid-core, plates carried by said rods adapted to brace the same, and slots arranged in said bracing-plates to receive said rods and to be brought by said slots into and out of engage ment therewithby a slight movement thereof, substantially as and for the purposes described. Y

5. In an electric-arc lamp, a solenoid-core and a skeleton frame, arms connecting said core with said frame and slots arranged in said arms to engage said frame, and nuts adapted to clamp said arms to said frame, substantially as and for the purposes de scribed. y Y

In testimony whereof I have hereunto set my signature in the presence of two subscriba ing witnesses.

JOHN kA. IIEANY.

Vitnesses:

J. WALTER DoUeLAss, THOMAS M. SMITH.

ICO

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